package com.atguigu.gulimall.cart.vo;

import java.math.BigDecimal;
import java.util.List;

/**
 * 整个购物车
 * 需要计算的属性必须重写get方法，保证每次获取属性都要进行计算
 */
public class CartVo {
    List<CartItemVo> items;//购物车项
    private Integer countNum;//商品数量
    private Integer countType;//商品类型数量
    private BigDecimal totalAmount;//商品总价
    private BigDecimal reduce = new BigDecimal("0.00");//减免价格

    public List<CartItemVo> getItems() {
        return items;
    }

    public void setItems(List<CartItemVo> items) {
        this.items = items;
    }

    public Integer getCountNum() {
        int count = 0;
        if(items!=null && items.size()>0){
            for (CartItemVo item : items) {
                count += item.getCount();
            }
        }
        return count;
    }


    public Integer getCountType() {
        int count = 0;
        if(items!=null && items.size()>0){
            for (CartItemVo item : items) {
                count += 1;
            }
        }
        return count;
    }

    public BigDecimal getTotalAmount() {
        BigDecimal amount = new BigDecimal("0");
        //1、计算购物项总价
        if(items!=null && items.size()>0){
            for (CartItemVo item : items) {
               if(item.getCheck()){
                   BigDecimal totalPrice = item.getTotalPrice();
                   amount = amount.add(totalPrice);
               }
            }
        }
        //2、减去优惠总价
        BigDecimal subtract = amount.subtract(getReduce());
        return subtract;
    }

    public BigDecimal getReduce() {
        return reduce;
    }

    public void setReduce(BigDecimal reduce) {
        this.reduce = reduce;
    }
}
